Gustave gbeikdl



G; GREINDL. ROTARY PUMP.

(No Model.)

Patented Mar. 3, 1885.

Jive/afar.

N. PETEps, Pmwumo u her. Washingiom D. C.

NlTED STATES GUSTAVE GREINDL, OF BRUSSELS, BELGIUM.

ROTARY PUMP.

SPECIFICATION forming part of Letters Patent No. 313,415, dated March 3,1885.

Application filed March 7, 1884. (No model.) Patented in France Apr l 4,1883, No. 154.670; in Belgium April 7. [853,

No. (H.015, and in England April 1;, 185.5, No.1,8t8.

To aZZ whom, it may concern/.-

Be it known that I, Baron GUSTAVE GREINDL, a citizen of Belgium,residing at Brussels, in the Kingdom of Belgium, have invented new anduseful Improvements in Ed tary Pumps, of which the following isaspecifio'ation.

This invention has reference to rotary pumps and other rotary apparatusof the system known as Greindls. This system is described andillustrated in the specification forming part of Letters Patent of theUnited States No. 152,904, granted to me July 14, 1874. The only seriousobjection that has been made to the apparatus as therein described isthe difficulty of repairing the casing or body of the pump, the wingswhich take the place of a piston, or the other parts when worn ordeteriorated by use-for example, in movingliquids ofa corrosivenature orcharged with solid matters in suspension.

To overcome this difficulty is the principal object of the invention.

To this end it consists, first, in dividing the casing or body into twoor more sections, the dividing lines extending across the said casing orbody parallel with or in the same general direction as the shafts of therotating wheels inside.

It also consists in providing the casing or body, or one or more of thesections thereof, with a detachable or removable lining.

It consists, thirdly, in providing the rotary part of the apparatus withremovable and renewable shoes or coverings.

Furthermore, the invention comprises certain special constructions andcombinations of parts hereinafter set forth, whereby the difficultyabove spoken of is to a great extent avoided, or other advantages aresecured.

The accompanying drawings illustrate apparatus constructed in accordancewith the invention.

Figure l is a vertical longitudinal section of one of the improved pumpshaving a wheel with two driving wings or palettes; Fig. 2, a partial(one-halt) plan View of the same; Fig. 3, a vertical longitudinalsection of another form of pump having a wheel with four drivhalf)cross-section of the same; and Figs. 5, 6, 7, 8, and 9 detail views.

A is the casing or body of the pump divided at the lines a intosections. (three, as shown in Fig. 1; two, as shown in Fig. 3.) Thesections are flanged, and are fastened together by bolts or by othersuitable means. The suction and discharge openings are formed, as shown,in different sections. Inside the casing or body are the two wheels, B0, one, B, provided with driving wings or palettes, the other, 0, havingrecesses to receive the said wings or palettes as they revolve. Ascustomary, the two wheels are connected by gearing, (not shown,) whichturn them inopposite directions. the recessed wheel 0 at twice the speedof the winged wheel B.

In Fig. 1 the casing or body is shown provided with a removable lining,D, where the wheel 0 or the wings of the wheel B rub against the same.As shown, the lining is held in place by tongues b of dovetail formfitting in corresponding grooves in the body-sections; but otherfastening means could be used. The lining is divided at the lines a inthe same manner as the body, but this is not necessary.

It is evident that the removable lining could be applied to a casing orbody made in one piece, as described in the aforesaid patent.

The arrangement with four wings to the wheel B has this advantage overthe two-wing arrangement, that it is only necessary to make a close fitbetween the wings or palettes and the inside of the casing or bodyduring a quarter of a revolution instead of a half-revolution, as in thearrangement of Fig/ 1. This part only, therefore, will be exposed towear; and it will suffice to remove and replace the correspondingsection of the casing or body, which, as shown, is the upper section.

The wings or palettes in all the figures are provided with removable andreplaceable shoes or facings E, which are shown as being fastened inplace in different ways. The righthand wing in Fig. 1 and top wing inFig. 5 have the shoe or lacing held in place by tongues of dovetail formfitting in grooves in the end ofthe body ofthe wing. In the left-handwing, Fig. l, and the bottom wing in Fig. 5 the shoes 50 ing wings orpalettes; Fig. 4, a partial (one- E are provided with adovetail groove,which xco fits over the correspondingly-shaped end of the a rotary pumpsuch as shown in my aforesaid body of the wing, and also withatongue,which fits in a groove'in the end of the wing. Screws 0, which passthrough the middle of the shoe, where it is thickened by the aforesaidtongue, and are screwed into the wing, serve as an additional means ofholding the shoe in place.

In the wings of Figs. 3and 4and the bottom wing of Fig. 5 the shoes arelike those last described, except that, being made heavier, itis notnecessary to thicken them by a tongue in the middle. They are held inplace also by screws 0.

The recessed wheels Gin all the figures have shoes or facings F wheresaid wheels rub against the casing. These shoes or facings are held inplace by the same means as-described for the shoes E or by similarmeans. It is obvious, however, that they, as wellasthe shoes on thedriving-wings, may be secured in place by other means. A facing of antifriction metal may be cast in place.

Modifications may be inadein the details of construction withoutdeparting from the spirit of theinvention, and parts of the inventionmay be used separately.

Having now explained the invention and the manner of carrying the sameinto effect, I

would observe, in conclusion, that I claim in patent of July 14, 1884,and as an improvement thereon, the following:

1. The casing divided as described, and provided with the removable andrenewable lining. substantially as set forth.

'2. The casing divided as described, in combination with the inclosedwinged and recessed wheels,the winged wheels being provided withremovable and renewable shoes or facings, substantially as set forth.

3. The casing divided as described, in combination with'the inclosedwinged and recessed wheels, the recessed wheels being provided with thedetachable and renewable'facings,

G. GREINDL.

\Vitnesses:

R. S. KIRKPATRICK, H. T. ErIiIRKPATRIOK.

